In densely populated cities like New York, there’s often nowhere to go but up. Depending on local zoning regulations, that restriction often results in a structure that steps back, floor by floor, as it rises.
Architecture firm ODA has turned that development model on its head in its design for 100 Norfolk Street in Manhattan’s Lower East Side.
Using bold cantilevering and imaginative structural design, ODA and its project team created a 12-story building whose massing grows in width as it steps upward. As a result, the top floor has twice the footprint of the ground floor, and 60% of total floor area is contained in the top six stories—a complete flip-flop of the conventional step-back building model.
This configuration has given developer Adam America Real Estate a luxury condominium property with more premium living space and units than usual on the upper floors. It also helps isolate these more valuable properties from street noise, while offering their occupants panoramic views of the city, plus enhanced daylight.
It’s an unusual architectural achievement that stands out in an old New York neighborhood dominated by tenement-style housing and low-rise commercial frontages.
Graphic: ODA.
It’s also the rare example of a developer being able to build a residential structure that leans into the airspace above an adjacent property.
Adam America Real Estate’s initial charge to ODA New York was to analyze the 70-foot-wide mid-block site between Delancy and Rivington Streets and suggest ways to create maximum value from the property.
“As a firm, we’ve pushed deep into the local codes and site analysis so that we can extract as much value as possible for the client while also designing a building that will enhance the neighborhood,” said Eran Chen, AIA, ODA’s Founding Principal.
The upside-down massing concept came out of the realization that if the building were designed for a corner site rather than for mid-block, more of the future building occupants would enjoy better air, daylight, and city views. As the designers explored how to build 100 Norfolk as if it were on a corner lot, their attention turned to the notion of acquiring air rights over the neighboring property.
This set in motion a series of negotiations with the owner of the adjacent property, a low-rise commercial space.
See Also: A place of ‘voluntary and cheerful resort’
THE IN’S AND OUTS OF NYC AIR RIGHTS
Typically, development rights transfers in New York City are based on what is known as a zoning lot development agreement. A ZLDA (pronounced “Zelda”) allows neighbors to pool their development rights.
Take the case of two neighbors. Each is entitled to develop up to 100,000 sf on its property. If one owner plans to build out 50,000 sf, that owner could enter into a ZLDA with the neighbor that would allow the other property owner, in return for payment, to develop 150,000 sf. New York City ZLDAs permit one neighbor’s building to extend into the airspace over the adjacent property.
The ability to build up and over the neighboring property is what made 100 Norfolk possible and allowed the owners of the adjacent property to keep their building intact while benefiting financially from the redevelopment of the 100 Norfolk site.
To bring the “flipped” concept into reality, ODA and structural engineer DeSimone Consulting Engineers conceived a system of trusses connected on four sides, like boxes. The basic building block of the system is a truss composed of two parallel steel tubes connected by a diagonal tube; the complete system forms the cantilever that makes the upside-down massing efficient and rigid. This forms a strong, stable structure that effectively captures height to create appealing, airy interior volumes.
Locating the bulk of the truss system at the perimeter of the building eliminated the intrusion of columns into living units—a huge design plus. “We also decided not to hide the trusses,” said Chen. The trusses are visible at some interior locations, as well as from the outside through the glass curtain wall. As a result, said Chen, “the structure of 100 Norfolk becomes a part of the architectural expression.”
The cantilever strategy also made possible another striking design element. By moving most residential floor area upwards into the most compelling areas for living space—and by spreading the upper floors to max out allowable square footage under the applicable building codes and zoning regulations—the design allowed for a soaring triple-height, 27-foot entry lobby.
The building was completed in April. ODA’s floor plans for the 38 condominiums optimize daylighting by providing each unit with at least one vertical face (although some units under the top floor are partly shadowed by the cantilever). The design also yielded a 2,000-sf amenities terrace on 100 Norfolk’s roof, plus another outdoor space on the roof of the adjacent building, for a total of 7,800 sf of outdoor space. Access to the neighboring roof was guaranteed in the ZLDA.
Photo: Miguel de Guzmán / Imagen Subliminal.
FITTING INTO THE NEIGHBORHOOD, WITH FLAIR
Chen said feedback from the neighbors has been positive. “We were told that the community liked having a distinctive building, and that the new apartments could also help establish the southern part of the Lower East Side as a desirable place to live.” The new building also complements the so-called Blue Tower at 105 Norfolk, the 16-story Bernard Tschumi–designed residential building marked by angled walls and a pixelated façade.
Chen said he would advise those looking to emulate 100 Norfolk’s air rights scheme to bone up on the local jurisdiction’s planning laws and zoning regulations. “We had to be creative in the way the massing was shaped to meet the fire restrictions between buildings and secure the legal light and air rights benefits of the ZLDA,” he said.
“Designing form and shape is less important to us than the opportunity to create buildings that improve the quality of life in the city,” said Chen. He sees 100 Norfolk as an example of how a building with a small footprint can deliver plentiful daylight and enhance enjoyment for city dwellers. “It shows how naturally these architectural goals can align with the goals of developers,” he said.
PROJECT TEAM | 100 NORFOLK
OWNER/DEVELOPER Adam America Real Estate design ARCHITECT/AOR ODA New York STRUCTURAL ENGINEER DeSimone Consulting Engineers
MEP Sideris Kefalas Engineers General contractor Britt Realty
Related Stories
Multifamily Housing | Feb 1, 2016
Top 10 kitchen design trends for 2016
Charging stations, built-in coffeemakers, and pet stations—these are among the top kitchen design trends for the coming year, according to a new survey of kitchen and bath designers by the National Kitchen & Bath Association.
Codes and Standards | Jan 22, 2016
Treasury Dept. will start crackdown on illicit money in luxury real estate
The move is expected to impact high-end condo development.
| Jan 14, 2016
How to succeed with EIFS: exterior insulation and finish systems
This AIA CES Discovery course discusses the six elements of an EIFS wall assembly; common EIFS failures and how to prevent them; and EIFS and sustainability.
Multifamily Housing | Jan 8, 2016
Manager of New York’s first micro-unit development inks pact with ‘personal butler’ service
The co-living platform Ollie is leasing its initial building, in New York, with housekeeping and grocery shopping available via Hello Alfred.
Urban Planning | Jan 4, 2016
The next boomtown? Construction and redevelopment sizzle in San Diego
The city's emission-reduction plan could drive influx into downtown
Multifamily Housing | Dec 23, 2015
Student housing developer broadens its reach into multifamily
Aspen Heights Partners evaluates seven metros for its initial projects.
Multifamily Housing | Dec 17, 2015
Developers respond to demand from tenants for ‘smart’ design
A number of green prerogatives are having a beneficial impact on multifamily design and construction.
Multifamily Housing | Dec 14, 2015
Study finds increase in cost-burdened renters
Harvard’s Joint Center for Housing Studies released its biennial rental housing report, and it found that 21.3 million renters spend 30% or more of income towards rent.
Multifamily Housing | Dec 10, 2015
Developer of Jean Nouvel-designed New York City condo complex sued
One resident says living in the curvy, glass 100 Eleventh Avenue building is like being in a wind tunnel.
Multifamily Housing | Dec 7, 2015
Are long-term apartment rentals Airbnb’s next target?
Some developers are thinking about that possibility, says one West Coast real estate consultant.